trouble shooting

by stonecoldrc, Tuesday, October 20, 2015, 15:07 (3326 days ago)

I have a S&W Model 17-4 with a problem. Double action shooting is fine. When shooting single action the problem starts. When the trigger is pulled, the hammer seems to catch on the way down. Either stops partway down or falls jerkily and does not fire the cartridge. Ideas about what is wrong?


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